A) -3 D
B) + 3 D
C) -1 D
D) +1 D
Correct Answer: B
Solution :
\[f=\frac{yD}{y-D}=\frac{100\times 25}{100-25}=\frac{100}{3}cm=\frac{1}{3}m\] \[P=\frac{1}{f}=+3\,D\]You need to login to perform this action.
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